Formed 1956

The club was formed as Marconi-Fairfield in 1956 primarily by Italian migrants.

The club were founder members of the National Soccer League in 1977. During their time in the National Soccer League, Marconi Stallions won the premiership a record four times, equal with South Melbourne and Sydney City who also won four premierships. Marconi were crowned premiers in 1979, 1988, 1989 and the 1992/93 seasons. Along with South Melbourne, Marconi was one of only two clubs to compete in every season of the NSL.

The now compete in the NSW Premier League.